I had an incident the other day where the bike just stopped. The battery was dead. I replaced it with a spare one and everything was fine but then I checked to see if the charging system was funcitoning, it wasn't. I had AC voltage at the alternator but no DC at the battery. I found that if you follow the two yellow wires of the alternator output you come across a pair of banana connectors, then about 10 cm of more yellow wire up to a 2 blade connector that goes to the voltage regulator. This section from the two banana plugs to the two blade connectors had completely deformed from heat and was shorting the whole circuit. I cut out the melted section and including the banana plug and re-connected the voltage regulator. The charging system works now charging a 14v.
mfeeney